#define _CRT_SECURE_NO_WARNINGS 1
#include<iostream>
using namespace std;

class A
{
private:
	int _x;
public:
	A(int x = 1)
	{
		_x = x;
	}
	int add(int x);

};

int A::add(int x)
{
	return _x + x;
}

int main()
{
	return 0;
}